Window-sash holder.



S. B. CRANE.

WINDOW SASH HOLDER.

APPLICATION FILED 0013.10, 1910-.

1,044,144, Patented Nov. 12, 1912.

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i ATTbRNEY.

COLUMBIA PLANOGRAPH CO WAsH NGTON D C UNITED STATES PATENT oFFioE.

SYLVANUS B. CRANE, OF KANSAS CITY, MISSOURI.

WINDOW-SASI-I HOLDER.

Specification of Letters Patent.

Patented Nov. 12, 1912 Application filed October 10, 1910. Serial No. 586,308.

Holders; and I do declare the following tobe a full, clear, and exact description of the invention, such as will. enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and t0 the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to window sash holders and more particularly to a device of that class by which the window sash will be frictionally held at the desired height in the window frame without the aid of counterbalancing weights.

The principal object of my invention is to provide a window sash with a holder having a friction block which may be automatically thrown into and out of additional frictional engagement with a bearing strip according to the direction of movement of the window sash, so that the window sash may be easily raised; but will be frictionally and yieldingly held at the desired height when released.

A further object of my invention is to provide other new and improved details of construction hereinafter described and illustrated in the accompanying drawings, in which Figure I is a vertical section of a window frame and sash illustrating my improved frictional sash holder; a part of the sash friction strip being broken away to show the friction devices. Fig. II is a vertical section on the line IIII of Fig. I, showing a part of a lower window sash provided with my frictional sash holder. Fig. III is a vertical section of my frictional sash holder. Fig. IV is a vertical section of the upper part of a window sash showing a preferred form of yielding keeper or latch. Fig. V is a detail perspective View of the friction block; a part of a lower corner being broken away for better illustration.

Referring more in detail to the parts 1 is a window frame in which are mounted the window sashes 2 and3 which. are adapted for sliding movement in said window frame in the usual manner.

Spaced inwardly to a distance less than the width of the sash stile is a friction strip 4, which is secured to thebearing strip 5 and is adapted to lie parallel to the side of the window frame 1, fixedly mounted on the sash 2 and slidably mounted between the side of the window frame and the frictionstrip 4 is a bracing device comprising a pair of flat side springs 7 and a friction block; theends of the side springs 7 being bent outward and curved inwardly at their extremities to frictionally engage the faces of the window frame 1 and the friction strip 4, respectively, and the central portion being united by a pivot pin 9 upon which the friction block is pivotally mounted. The springs 7 are also freely rotatable with respect to the frictionblock. Said friction block is 1 adapted to impinge against the bearing strip oand is preferably of hollow or skeletonconstruction and comprises. the side portions 10 and a front face. having lower vertical portion 11 that is parallel withthe free edges of the sides, and a slanting upper portion 12 that is continuous with andextends above the vertical front portionll. Extending partly across the bottom of-the friction block is the base 13 the use of which will be presently described.

15 is aflat front spring, one end of which is fixed to the lower end of the face of the window sash rail while the'other end-is left free and has frictional engagement therewith, the central part being bowed outwardly and cut away at its edges to form a neck 16' providing lower and upper offsets or shoulders 17 the upper offsets being located substantially nearer the center of the bowed part of the front spring 15 than I the lower ofisets 17, see Fig. II. The neck 16 of the front spring 15 is adapted to slide within the friction block between its pivot pin 9 and the front portion thereof and the front spring is also adapted to carry the friction block with itwhen the ofisets 17 come in contact therewith; the friction block member 21. In the upper rail of the window sash I provide one or more spring latches or keepers comprising a plunger 22, which is carried in a socket 23 and tensioned against a metal latch plate 24 in the cross frame member 25 by a spring 26.

When the window sash is at rest in its lowest position the vertical front portion of the friction block 11 is caused to impinge against the face of the bearing strip 5 by the bowed portion of the front spring 15 bearing against the inner edge of the base 13 of the friction block which is frictionally supported normally by the lighter side springs 7 against the upper ofisets 17 of the front springs 15. When the window sash is raised the side springs 7 are frictionally bracing and supporting the friction block, as hereinbefore stated, so that the neck 16 of the front spring 15 slides through the friction block against the pivot pin 9 of the friction block and the friction block following the inward curvature of the front spring 15 draws the vertical front portion 11 of the friction block away from the face of the bearing strip 5 and tilts the friction block and the lower shoulders 17 of the front spring 15 next coming in contact with the frictionblock lifts the friction block with the side springs 7 by overcoming the frictional hold of the latter on the window frame 1 and the friction strip 4. As the window sash is moved upwardly the inner edge of the base 13 follows the curve of the front spring, the lower front portion 11 of the friction block is tilted inwardly on its pivot pin 9 while the upper slanting portion 12 is tilted outwardly toward the metal strip 20 on the face of the bearing strip 5 and may slide thereon freely to its upper position. When the window sash reaches its highest position the side springs 7 will hold it up frictionally. When the window sash is lowered the side springs 7 will yield and slide on the window frame 1 and the friction strip 4, the neck 16 of the front spring 15 will slide inthe friction block and its bowed portion, coming in contact with the edge of the base 13 of the friction block, will tilt the latter and the continued downward movement of the window sash will cause the upper stops 17 on the front spring 15 to engage the friction block so as to cause the lower vertical front portion 11 of the latter to bear on the bearing strip for steadying the downward movement of the window sash.

Owing to the lower offset-s 17 being low down on the bowed part of the front spring 15, the vertical front portion 11 of the friction block will be pressed but lightly against the bearing strip 15 so that itwill exert but little resistance to the upward movement of the window sash. The side springs 7 are only of slightly greater strength than is necessary to hold the weight of the window sash so that when the window sash is to be lowered, a slight downward pressure thereon will overcome the frictional hold be tween the window frame 1 and the friction strip 1, so that the window sash can be easily lowered against the tension of the springs.

In use I prefer to have a spring 18 and roller 19 at the top and my frictional device at the bottom of one side sash rail and like parts located vice versa on the opposite sides of the window sash rail in order to more evenly balance the window sash.

Having thus described my invention the following is what I claim as new therein and desire to secure by Letters Patent:

1. A window sash holder, comprising a spring member having stops and a bowed portion between its ends, and a friction block slidably mounted on the bowed portion between the stops.

2. A window sash holder, comprising a spring member having stops anda bowed portion between its ends, a friction block slidably mounted on the bowed portion between the stops, and yielding means for retarding travel of the block.

3. A window sash holder, comprising a spring member having stops and a bowed portion between its ends, a friction block slidably mounted on the bowed portion between the stops, and an auxiliary spring member for yieldingly retarding travel of the block.

4. A window sash holder comprising a bowed spring having a contracted portion between its ends and shoulders at the ends of the contracted portion, and a friction block slidably mounted on the contracted portion and adapted for abutment against said shoulders.

5. A window sash holder comprising a spring having a bowed portion between its ends and stop members at the ends of the bowed portion, and a friction block having a closed side and a pin spaced from the side whereby the block is mounted for slidable and pivotal movement on the bowed portion of the spring between the stop members.

6. A window sash holder comprising a spring having a bowed portion between its ends and stop members at the ends of the bowed portion, and a friction block having a closed side and a pin spaced from the side whereby the block is mounted for slidable and pivotal movement on the bowed portion of the spring between the stop members. the closed side of the block having a vertical and an inclined face for the purpose set forth.

7. A window sash holder comprising a pivot pin, a friction block mounted on the pivot pin, a pair of side springs mounted on the friction block, and a front spring having a neck, providing shoulders and combination with a window frame and window sash, a bearing strip secured to the window frame, a spring secured at one end to the window sash and adapted for yielding contact with said window sash at the opposite end, a friction block slidably mounted on said spring and adapted for engage ment with said bearing strip, a friction strip, and friction members carried by the friction block and engaging the window frame and friction strip respectively.

9. A window sash holder comprising in combination with a window sash, a bearing strip secured to the window frame, a flat spring secured at one end to the window sash and having a central bowed portion, a friction block carried by the bowed portion of said flat spring and adapted for both pivotal and sliding movement thereon, a friction strip, and springs carried on opposite sides of said friction block and engaging the window frame and friction strip respectively.

10. A window sash holder comprising in combination with a window frame and window sash, a bearing strip fixed to the window frame, a spring fixed at one end to the window sash and having a central bowed portion, a friction block comprising a vertical face and an inclined face, a pin extending transversely between the sides of the friction block and retaining the latter on said spring, a friction strip, and friction members carried on opposite sides of the friction block and engaging the window frame and friction strip respectively.

11. A window sash holder comprising in combination with a window frame and win dow sash, a bearing strip fixed to the window frame, a flat spring fixed at one end to the window sash and having a central bowed portion of less width than the remainder of the spring body providing a neck and shoulders, a friction block carried on the bowed portion of said flat spring and through which the neck of the spring is adapted to slide, said friction block having side portions, a vertical face, an inclined face, and a base member extending partly beneath said side portions, a pin extending between the side portions, a friction strip, and springs secured to the side port-ions and having out-turned ends engaging the window frame and the friction strip respectively.

In testimony whereof I afiix my signature in presence of two witnesses.

SYLVANUS B. CRANE. Witnesses MYRTLE M. JACKSON,

ARTHUR W. CAPS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. C. 

